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A203457 Number of nX5 0..2 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors 1
1, 63, 3748, 143936, 5660631, 231588325, 9441977403, 385259518988, 15769361994812, 645761085331412, 26436118387761701, 1082201755675241681, 44303475359100889481, 1813730483493212443443, 74252023311120691422496 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 5 of A203460

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=5

..2..2..2..2..0....0..0..1..1..0....1..2..2..1..0....2..2..2..2..2

..2..1..0..2..1....1..1..1..1..1....1..2..2..2..0....2..1..2..0..2

..2..0..0..2..2....1..1..2..2..1....2..2..0..2..0....2..2..2..0..2

..2..2..2..1..2....2..2..2..2..2....2..0..2..2..1....0..1..2..0..2

..1..1..2..2..2....2..2..0..2..2....2..2..2..2..1....0..0..2..2..2

CROSSREFS

Sequence in context: A273437 A069381 A051589 * A258684 A180926 A267963

Adjacent sequences:  A203454 A203455 A203456 * A203458 A203459 A203460

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 02 2012

STATUS

approved

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Last modified September 16 15:58 EDT 2021. Contains 347473 sequences. (Running on oeis4.)